GMH Audio Wave Destroyer,

Wave Destroyer is a free distortion effect programmed by GMH Audio, the developer behind the free Buzz Cut soft clipper plugin, which we covered back in 2018. Whereas Buzz Cut focused on a single method of audio distortion, the new Wave Destroyer effect delivers a much more extensive arsenal of distortion types. The plugin also includes a set of frequency shaping features that make it a much more powerful sound design tool.
The plugin features three distortion modes: Saturate, Distort, and Destroy. Each mode can be fine-tuned using the Drive control, as well as the Asymmetry and Bias adjustments. Wave Destroyer also includes two EQ stages (pre-distortion and post-distortion), input and output gain adjustments, oversampling, a DC filter, a mix control, and a bypass switch. The two equalizer sections feature five adjustable frequency bands. It’s possible to link the two EQs for more effortless operation.
Thanks to its three distortion algorithms, Wave Destroyer is a rather versatile distortion utility. You can use it as a subtle saturation tool, a stompbox-style fuzz distortion unit, or as a crazy distortion effect for total audio annihilation.

https://www.gmhaudio.com/wave-destroyer